bbc13ae3db
pointer to expression string to parse_exp_1. (create_excep_cond_exprs): Likewise. * ax-gdb.c (agent_eval_command_one): Likewise. (maint_agent_printf_command): Likewise. Constify much of the string handling/parsing. * breakpoint.c (set_breakpoint_condition): Pass const pointer to expression string to parse_exp_1. (update_watchpoint): Likewise. (parse_cmd_to_aexpr): Constify string handling. Pass const pointer to parse_exp_1. (init_breakpoint_sal): Pass const pointer to parse_exp_1. (find_condition_and_thread): Likewise. Make TOK const. (watch_command_1): Make "arg" const. Constify string handling. Copy the expression string instead of changing the input string. (update_breakpoint_location): Pass const pointer to parse_exp_1. * eval.c (parse_and_eval_address): Make "exp" const. (parse_to_comma_and_eval): Make "expp" const. (parse_and_eval): Make "exp" const. * expression.h (parse_expression): Make argument const. (parse_exp_1): Make first argument const. * findcmd.c (parse_find_args): Treat "args" as const. * linespec.c (parse_linespec): Pass const pointer to linespec_expression_to_pc. (linespec_expression_to_pc): Make "exp_ptr" const. * parse.c (parse_exp_1): Make "stringptr" const. Make a copy of the expression to pass to parse_exp_in_context until this whole interface can be constified. (parse_expression): Make "string" const. * printcmd.c (ui_printf): Treat "arg" as const. Handle const strings. * tracepoint.c (validate_actionline): Pass const pointer to all calls to parse_exp_1. (encode_actions_1): Likewise. * value.h (parse_to_comma_and_eval): Make argument const. (parse_and_eval_address): Likewise. (parse_and_eval): Likewise. * varobj.c (varobj_create): Pass const pointer to parse_exp_1. (varobj_set_value): Likewise. * cli/cli-cmds.c (disassemble_command): Treat "arg" as const and constify string handling. Pass const pointers to parse_and_eval_address and parse_to_comman_and_eval. * cli/cli-utils.c (skip_to_space): Rename to ... (skip_to_space_const): ... this. Handle const strings. * cli/cli-utils.h (skip_to_space): Turn into macro which invokes skip_to_space_const. (skip_to_space_const): Declare. * common/format.c (parse_format_string): Make "arg" const. Handle const strings. * common/format.h (parse_format_string): Make "arg" const. * gdbserver/ax.c (ax_printf): Make "format" const. * python/python.c (gdbpy_parse_and_eval): Do not make a copy of the expression string.
128 lines
4.4 KiB
C
128 lines
4.4 KiB
C
/* CLI utilities.
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Copyright (C) 2011-2013 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef CLI_UTILS_H
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#define CLI_UTILS_H
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/* *PP is a string denoting a number. Get the number of the. Advance
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*PP after the string and any trailing whitespace.
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Currently the string can either be a number, or "$" followed by the
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name of a convenience variable, or ("$" or "$$") followed by digits. */
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extern int get_number (char **);
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/* An object of this type is passed to get_number_or_range. It must
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be initialized by calling init_number_or_range. This type is
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defined here so that it can be stack-allocated, but all members
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other than `finished' and `string' should be treated as opaque. */
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struct get_number_or_range_state
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{
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/* Non-zero if parsing has completed. */
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int finished;
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/* The string being parsed. When parsing has finished, this points
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past the last parsed token. */
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char *string;
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/* Last value returned. */
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int last_retval;
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/* When parsing a range, the final value in the range. */
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int end_value;
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/* When parsing a range, a pointer past the final token in the
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range. */
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char *end_ptr;
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/* Non-zero when parsing a range. */
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int in_range;
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};
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/* Initialize a get_number_or_range_state for use with
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get_number_or_range_state. STRING is the string to be parsed. */
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extern void init_number_or_range (struct get_number_or_range_state *state,
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char *string);
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/* Parse a number or a range.
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A number will be of the form handled by get_number.
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A range will be of the form <number1> - <number2>, and
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will represent all the integers between number1 and number2,
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inclusive.
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While processing a range, this fuction is called iteratively;
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At each call it will return the next value in the range.
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At the beginning of parsing a range, the char pointer STATE->string will
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be advanced past <number1> and left pointing at the '-' token.
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Subsequent calls will not advance the pointer until the range
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is completed. The call that completes the range will advance
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the pointer past <number2>. */
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extern int get_number_or_range (struct get_number_or_range_state *state);
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/* Accept a number and a string-form list of numbers such as is
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accepted by get_number_or_range. Return TRUE if the number is
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in the list.
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By definition, an empty list includes all numbers. This is to
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be interpreted as typing a command such as "delete break" with
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no arguments. */
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extern int number_is_in_list (char *list, int number);
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/* Skip leading whitespace characters in INP, returning an updated
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pointer. If INP is NULL, return NULL. */
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extern char *skip_spaces (char *inp);
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/* A const-correct version of the above. */
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extern const char *skip_spaces_const (const char *inp);
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/* Skip leading non-whitespace characters in INP, returning an updated
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pointer. If INP is NULL, return NULL. */
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#define skip_to_space(INP) ((char *) skip_to_space_const (INP))
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/* A const-correct version of the above. */
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extern const char *skip_to_space_const (const char *inp);
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/* Reverse S to the last non-whitespace character without skipping past
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START. */
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extern char *remove_trailing_whitespace (const char *start, char *s);
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/* A helper function to extract an argument from *ARG. An argument is
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delimited by whitespace. The return value is either NULL if no
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argument was found, or an xmalloc'd string. */
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extern char *extract_arg (char **arg);
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/* A helper function that looks for an argument at the start of a
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string. The argument must also either be at the end of the string,
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or be followed by whitespace. Returns 1 if it finds the argument,
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0 otherwise. If the argument is found, it updates *STR. */
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extern int check_for_argument (char **str, char *arg, int arg_len);
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#endif /* CLI_UTILS_H */
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